3:01 or 15:01. It’s impossible to know for sure.
You can set it for any terran time you want. Just like the one on the right.
Behind it is a moon phase dial and a date index.
I’m thinking you meant the one on the left; which shows “Mars time” where a day is 39 minutes different from one on Earth. I’d assume you can also set it, individually, for time zones on Mars.